Operation; Priming The Pump - Flotec FP5200 Serie Manual Del Usuario

Operation

Figure 13 – Remove Priming Plug. Fill
Pump Before Starting
750 0993
Figure 14 – Run Ten Minutes or Less
Figure 15 – Do Not Run Pump with
Discharge Shut-off
For parts or assistance, call Flotec Customer Service at

PRIMING THE PUMP

NOTICE: 'Priming' refers to the pump expelling all air in the system and
beginning to move water from its source out into the system. It does not
refer only to pouring water into the pump (although pouring water in is
usually the first step).
NOTICE: NEVER run pump dry. Running pump without water in it will
damage seals and can melt impeller and diffuser. To prevent damage, fill
pump with water before starting.
Step 1. Remove priming plug (Figure 13). Replacing the priming plug with
a reducer bushing with a pressure gauge mounted in it will make
troubleshooting pump performance easier.
Step 2. Make sure suction and discharge valves and any hoses on discharge
side of pump are open.
Step 3. Fill pump and suction pipe with water (Figure 13).
Step 4. Replace priming plug, using Teflon tape on thread; tighten plug.
NOTICE: If a priming tee and plug have been provided for a long
horizontal run, be sure to fill suction pipe through this tee and
replace plug. (Don't forget to Teflon tape the plug.)
Step 5. Start pump: water should be produced in 10 minutes or less, the
time depending on depth to water (not more than 20') and length of
horizontal run (10' of horizontal suction pipe = 1' of vertical lift
due to friction losses in the pipe) (Figure 14).
If no water is produced within 10 minutes, stop pump, release all
pressure, remove priming plug, refill and try again.
Hazardous pressure and risk of explosion and scald-
ing. If pump is run continuously at no flow (that is, with discharge
shut off or without priming), water may boil in pump and piping
system. Under steam pressure, pipes may rupture, blow off of fit-
tings or blow out of pump ports and scald anyone near.
To prevent explosion, do the following:
Step A. Be sure discharge (valve, pistol grip hose nozzle, etc.) is open
whenever pump is running.
Step B. If pump fails to produce water when attempting to prime, stop
pump, release all pressure, drain pump and refill with cold water
after every two attempts.
Step C. When priming, monitor pump and piping temperature. If pump or
piping begin to feel warm to the touch, shut off pump and allow
system to cool off. Release all pressure in system and refill pump
and piping with cold water.
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